Bilateral muscle compensation occurs with a unilateral rotator cuff tear: A modeling study.

ABSTRACT: Bimanual tasks are necessary for daily activities but become difficult to complete with a musculoskeletal disorder. Rotator cuff tears (RCT) are a common musculoskeletal disorder. It is unclear how an unaffected contralateral limb compensates when performing bimanual tasks. This work used a computational model to examine the effects of a unilateral RCT on performance of loaded bimanual tasks. A bilateral upper limb model was developed in OpenSim (v3.3), then modified to represent 4 RCT severities ranging from no RCT to massive RCT. A shared load (13.3 N or 44.5 N) was added to the models to represent holding typical household and occupational objects. Three motions were used as inputs to the Computed Muscle Control algorithm: static postures at low and high arm positions, and a dynamic for

SUBMITTER: Moore ZM 

PROVIDER: S-EPMC12478950 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature